xkc-y25-pnp_nano_no.ino

/**
  Example of Modulemore XKC-Y25-PNP (NO configuration) 
  Sensor ---- Arduino
  (Brown) VCC  = 5v
  (Yellow) INPUT = digital 5 --> 4.7k ohm --> GND
  (Blue) GND = GND
  (Black) Not connected.
*/
int XKC_NO_PIN = 5;
void setup() {
  Serial.begin(115200);
  pinMode(XKC_NO_PIN, INPUT);
}

void loop() {
  bool detected = digitalRead(XKC_NO_PIN); 
  if(detected) {
    Serial.println("Liquid High");
  }else{
    Serial.println("Liquid Low");
  }
  delay(100);
}